"Good to Great" is a business book by Jim Collins that explores how companies transition from being average to achieving exceptional performance. Collins and his research team analyzed various organizations to identify key factors that contribute to this transformation, focusing on leadership, culture, and strategic decision-making. The book introduces concepts like the Hedgehog Concept, which emphasizes the importance of understanding what a company can be best at, and the role of Level 5 Leadership, characterized by humility and strong professional will. These principles serve as a guide for businesses aiming to elevate their success and sustain long-term growth.